C + + file operation Std::ifstreamTags: c + + 2015-02-04 20:51 1908 people read comments (0) Favorites Report Category: Programming language C + + (24)
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C + + is related to file operations:
Ifs.is_open () to determine whether the file is open
Ifs.get () gets a character of the file
Ifs.good () to determine whether the file ends
Std::ifstream::in Open in read-only mod
The pit you stepped on in the morning, it is necessary to record!
Problem: Spring consolidation WebSocket Injection service failed
Solution:
Step one: Add a jar package to the Pom.xml file
Step Two: Add configurator = springconfigurator.class on the server side
@ServerEndpoint (value = "/api/websocket", configurator = springconfigurator.class)
@Component public
class Websocketservice {
@Autowir
The DAC (administrator-specific connection) is required when decrypting a stored procedure that is already encrypted. When an error occurs while connecting to the DAC, the following steps are described:
1. The following error occurred while connecting the DAC:
C:/> sqlcmd-a-S 10.0.0.211-u sa-p zxyz
HResult 0xFFFFFFFF, Level 16, State 1
SQL Network interface: An error occurred while getting a dedicated administrator connection (DAC) port. Make sure that SQL browser is running, or
The user checks
local and remote interface classes. Configuration: Configuration includes generating configuration descriptors-This is an XML file, a property that declares the enterprise bean, a class file that has a bean bound (including stub files and skeleton files). Finally, these configurations are put into a jar file. You also need to define environment properties in the Configurator. Assemble applications: Includes installing enterprise beans into server ser
Express|server|sql
This paper mainly introduces the whole process of configuring SQL Server2005 Express and JDBC connection.
Can the Java application under SQL Server2000 be run on SQL Server Express, and tested and configured to summarize the following experiences:
1: First confirm that the SQL Server2005 Express has been installed.
2: Enable the TCP/IP protocol.
Open the TCP/IP protocol in the program->microsoft SQL Server 2005-> Configuration Tool->sql server perimeter configuration. As follo
1.Spring Loading (instantiated)
If not integrated with struts, spring loading is configured in the Web.xml of the Web program, there are two options in Web.xml, one is Contextloaderlistener, and the other is Contextloaderservlet.
If you are consolidating with struts, the spring load is configured in Struts-config.xml.
2. Container Post processor
After the container is instantiated, you can perform some operations on the spring container, which is implemented by implementing an interface Bean
: Surface Area Configuration for services and connections"Using both TCP/IP and Named pipes (B)" is already selectedThen check the SQL Server Configuration ManagerTCP/IP is turned on for instance named "SQLEXPRESS":Right-click TCP/IP to select Properties (or double-click TCP/IP), select the IPs tab, and at the bottom there is a "IPALL":Here's the problem: I didn't set up the TCP port, and after that I changed it:Then look at "SQL Native client Configuration":Double-click "TCP/IP":Everything is r
remote database is Sq_congxun, so the first line is changed to use [Sq_congxun]. The second place is to change the database schema, the general Local is the DBO, and the remote database is the database user as the schema, so press ctrl+h key, pop up the replacement window, the dbo to replace the Sq_congxun, this script is completed. Next open the remote database, create a new query, just copy the script in, execute, OK, congratulations, done! ////////////////////////////////////////////////////
Error message DescriptionMsg 15281, Level 16, State 1, procedure xp_cmdshell, line 1thSQL Server blocked access to the process ' Sys.xp_cmdshell ' of component ' xp_cmdshell ' because this component was shut down as part of this server's security configuration. System administrators can enable ' xp_cmdshell ' by using sp_configure. For more information about enabling ' xp_cmdshell ', see "surface area Configurator" in SQL Server Books Online.Component
/ahr0cdovl2jsb2cuy3nkbi5uzxqvdtaxmdc4nty4nq==/font/5a6l5l2t/fontsize/400/fill/i0jbqkfcma==/ Dissolve/70/gravity/southeast "> Step two: Open SQL Server , right-click -----> aspects. Change the contents of the server configuration and the surface area configurator. server configuration inside the remoteaccessenabled , remotedaenabled also have remoteproctransenabled all set to True watermark/2/text/ahr0cdovl2jsb2cuy3nkbi5uzxqvdtaxmdc4nty4nq==/font/5a6l
are few attributes. If an object has many attributes, We will manually write them one by one, which will waste development time and affect efficiency. therefore, the automatic configurator and accessors are available after OC2.0.
Next we will introduce the special settings and accessors in OC.
2: simplify the configurator and accessors. Pay attention to the two keywords @ property and @ synthesize.
perso
HTML5 WebSocket + Tomcat8 implementation ● real-time chat room for the Web version (single-user + multi-user)
I have previously created a websocket chat room for Tomcat 7, which is based on Tomcat 7 and jdk1.7. Some projects are under Tomcat 8 and there will be problems at this time, because it is not supported below 8, it implements websocket in the form of annotations. Refer to HTML5 WebSocket + Tomcat to implement Web instant chat rooms. The following describes how to implement chat rooms und
How to remotely log on to the SQL Server 2014 Database: sql2014
Log on to the SQLServer (2014) database remotely for your reference. The details are as follows:
Two computers with the same IP address and CIDR Block in the same LAN
Configuration:
Computer1: Windows 10, Install SQL Server 2014 enterprise Edition (as a Server)
Computer2: Windows 10, VS2015
Computer1: (1) set two login Methods: Windows user authentication and SQL Server Authentication
(2) configure the SQL Server Configuration Mana
unnecessary privileges, which may lead to security vulnerabilities, malware infections, or other problems.
The administrator can select a part of the computer scan or an organizational unit or an AD group. The Viefinity tool classifies the results, generates a graphical Summary Report, and allows the Administrator to export the report to Excel for further analysis and reporting. You can also easily delete accounts from the Administrator group.
Desktop CentralWindows Desktop Management Tool
Desk
shown.9.9.2, Role User Association The Role User Association is primarily to add or remove users who are owned by the currently selected role, and the user belongs to a role, representing all of the permissions that the role has. Remove a user from a role, the permissions that the user has on that role are also removed synchronously. The role User Association is shown.In the role Rights Management main interface, we select the "System Configurator" r
An error occurred while connecting to the database. I thought it was because the public static string connectionstring = "Server = .; uid = sa; Pwd =; database = dbhmis "; the server can write data source in this way. An error occurred while establishing a connection with the server. When you connect to SQL Server 2005, the default setting does not allow remote connection to SQL Server may cause this failure. (Provider SQL network interface, error 26-the error occurred when locating the specifie
settings, physical memory settings, and your products. key. This stored procedure has many input parameters that allow you to filter the returned records. Each parameter is a sysname data type, which accepts the name of a record. If all parameters are specified, only the specified row is returned as the parameter.
No filtering is specified.
Exec xp_msver
Only the platform and comments records are returned.
Exec xp_msver 'Platform ', 'comments'
Xp_get_mapi_profiles
The xp_get_mapi_pr
avoided.The overall structure is as follows, which is clear:
1: (function() {
2: backbone. Events // custom event
3: backbone. Model // model constructor and prototype Extension
4: backbone. Collection // set constructor and prototype Extension
5: backbone. Router // router configurator constructor and prototype Extension
6: backbone. History // router constructor and prototype Extension
7: backbone. View // view constructor and prototype Extensi
It serves as a resource property configurator that can put the content defined in beanfactory in a file suffixed with. propertis.
To understand this class, we must first clarify the concept of Bean Factory post-processor.The official explanation is as follows:A bean factory post-processor is a Java class which implementsOrg. springframework. beans. factory. config. beanfactorypostprocessor interface. it is executed manually (in the case of the beanfa
Int Pos = Str. Find ("\ t ");
If (Pos = string: NPOs) in the above Code, the POs type is defined as int, which is incorrect, even if it is defined as unsigned int, it must be defined as string: size_type.
In C ++, NPOs is defined as follows:
Static const size_type NPOs =-1;Because string: size_type (defined by the string configurator Allocator) describes size, it must be an unsigned integer. Because the default
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